Beam clamp



'[HAAGENSEN BEAM CLAMP YPatented Oct. 9, 1951 UNITED `SIATESS ATEENTOFFICE :2,570,666 1 BEAM CLAMP Tlrorfllaagfensen, New Yfork, N.pplcationseptember 16, 1949, vS'e'rial"No.`1161089 ."1Claims. (Cl.25-131.-5`)

1 'This inventionfrelatesto "form clamps "or hangers o'f the characteremployed for "the 'support o'f "concrete Aforms 'from structural 'steel`I beams.

vide a device .of this 'ch'aracterwhich will beof simplen/(instructionand which will 'ri'gidl'y'and firmly grip theflange "ofthebeam andsecurely support the *forms The invention V`further contemplates theprovision of a hanger or clasp of this eharacter "which'may be easilyfitted in position and adjusted;-which -w-ill permit the removal andrepeated use of its supporting rod;

which willpermit"themaintenanceof the clamp parts or gripping elementswithin 'the "concrete mass without-causing :the laterformation of rustmarks on the surface of the concrete, and which will VAbe 'composed ofbut :few and readilyifabr'icated fparts.

'These' and other ob'ieets 'are vattained by 'theinvention, a 'moreparticular*description of which will hereinafter appear "and bespeciiically set forth in vthe 'claims `appended"hereto `In `the'accompanying drawing, wherein 'an illustrative embodiment of theinvention is disclosed, Fig. l is a sectional View of the improved formclamp in engagement with the lower flange of an I-beam, showing theclamp supporting the form boards and with the concrete maintainedthereby; Fig. 2 is a View looking at one end of the clamp; Fig. 3 is atop plan view of the clamp in engagement with the lower flange of an I-beam, but with the form boards omitted; Fig. 4 is a horizontal sectionalView through the supporting rod just below the upper clamp member or jawthereon, and Fig. 5 is a view showing a modified form of head on therod.

The clamp includes a supporting rod I which is provided at one end witha threaded end portion 2 on which is threadably and thus adjustablymounted, the two clamp members or jaws 8 and II to be presentlydescribed. At its other end the rod is provided with a xed and enlargedhead 3 which may be welded or otherwise securely and non-rotativelyattached to the end of the rod I. In the form shown in Figs. l to 3inclusive, said head includes a disk portion 4, having an upper,relatively at, bearing surface 5 for the support of the form boardsshown, for example, at I5 and I6. Extending integrally and laterallyfrom the disk portion 4 is an offset part 6 terminating in a handleshown at 1.

The upper clamp member 8, threadable upon the threads 2 on the rod I, isin the form of a substantially triangulated or wedge-shaped plate'having' an un'de'r angular face llladapted to be maintained against thetop of th'e lower iiange of the I-beam I3, as clearlyrshown inf-Fig. l.Arising ifrom the top sur-fa'ce of the clamp memberf isa"vertical viin 9which eri'abl's Ithe -'cla'rnp`1membe`r te bef-manually rotated when'plac- 'ing y"1t in 'damping 'posi-tion "on the ali'ge of 'thebeamyand-also prevents rotativeimoveinent ofthe clamp after fthe-eoneret'e zis 'poured around 'the Saillie. Y

The lower :or under el'airip riimbr v"is"shiif/-n "at v'I 1 land thesame 'consists `of 'a il'at l"plate"which is -th-readable on theVthreads i2 `and is "thereby adi justable on 'thelrod Iteco'-operate'with theuppe'r clamp 8 in clamping the ange of the beam I3 between them-as showin in Fig. 1. Therlower ciampi-iig plate I-I 'fori-ned fat oneend-"with the v"down-ui'r'n'edup I2 which facilitates theifhanualadjustment of this 'elarnpand also-holds tl'i'evs'a'rfn'e againstshifting ``move-ment after 'the-concrete hasbeen'pouredaround it. Y

From the ioregoing, the'operation `of the clamp and"`form board 'Supportwill be readily rinde-ris'tood. The rod Ifextends through suitable holesor openings in the lower form boards I5 and I6, and which support theside boards I4 in the known manner, and the two clamping jaws and II arethreadably adjusted on the threaded portion 2 of the rod I so that thesame securely grip or clamp the lower flange of the I-beam I3 betweenthem. This is always done from above and not from below by manipulationof the handle 1. When the clamp is in position as above described, theconcrete 2E! is poured in the forms and allowed to harden. When theconcrete has hardened, the rod I is then removed and drawn out of theconcrete by unthreading the rod from the clamp members 8 and II. The rodI and its attached head and handle may then be reused. The clamp members8 and II are permitted to remain in the concrete mass and the small holetherein resulting from the removal of I the rod I may then be plugged.

It will be noted that the clamp members 8 and I I, remaining within theconcrete mass, are so disposed therein that no portions of them arelocated near the surface of the concrete, but are completely surrounded.This prevents the formation of a large opening at or near the surface ofthe concrete and the exposure of parts of the clamp members thereat andprevents the formation of rust stains on the surface of the concrete.The clamp members here employed are Wholly contained with the concretemass and located inwardly of the same and thus the objections 3 found inmany clamps in the same category are eliminated.

In the embodiment of the invention shown in Fig. 5, the lower end of therod I is formed with a loop or eye l1 as a substitute for the head 3 andhandle 'I thereon. In the latter embodiment the loop I1 may be employedfor the support of scaffolding during the building operation, and therod may be readily rotated for adjustment or removal by a tool insertedthrough the loop or eye I1.

A further modication may consist in combining the head 3 and handleelements 6 and 'I thereof with the loop I1 so that the loop is disposedbelow the disk portion 4. With such an arrangement, the combination ofoperating tool Vor handle, Washer or disk and a loop will be had.

Having described one embodiment of the invention, it is obvious that thesame is not to be restricted thereto, but is broad enough to cover allstructures coming within the scope of the annexed claims.

What I claim is:

l. A clamp and hanger for structural steel beams embedded in concretecomprising, a rod threaded at one end and provided with a head portionat the other end, a pair of clamp members both independently and boththreadably adjustable upon the threaded end of the rod for engaging andclamping the ange of the beam between them, said clamp members remainingin the concrete mass after hardening of the same and being positionedwell within the body of the concrete mass and remote from the surfacethereof.

2. A clamp or hanger as provided for in claim 1, wherein the headportion is iixedly secured upon the end of the rod and` comprisesa diskportion for the support of form boards, and an oiset handle portionprojecting therefrom.

3. A clamp or hanger as provided for in claim 1 wherein the head portionis xed on the end of the rod and is in the form of a loop or eye.

4. A clamp or hanger for structural steel beams comprising, a rodthreaded at one end and provided with a fixed head portion at its otherend, a pair of clamp members independently threadable on said threadedportion of the rod, one of said clamp members being of triangulated formand provided with a longitudinal 1in rising from its upper face, theother clamp member being in the form of a at plate having alaterally-extended lip at one end, said clamp members being adapted toengage and grip the flange of the beam between them.

5. A clamp or hanger for structural steel beams adapted to be embeddedin concrete comprising, a rod threaded at one end and provided with axed head portion at one end and a threaded portion at its other end, thehead portion consisting of a disk having an offset projecting handle,the disk having a nat upper face for bearing against form boards, a pairof clamp members independently threadable upon the threaded portion ofthe rod, one of the clamp members being of substantially triangulatedform and provided with afin arising from its upper face, the other clampmember being in the form of a fiat plate having a downturned end, saidclamp members being adapted to engage and clamp the flange of the beambetween them and being adaptedto 'remain in the concrete mass remotefrom the surface thereof after the rod has been removed.

THOR HAAGENSEN.

REFERENCES' CITED The following references are of record in the

